I used the kernel compiling options also.my problem is i have load my module with the kernel
core i.e link it with the msg.o file before calling insmod command.
From: Ravi <ravivsn@roc.co.in> To: praveen praveen <prav_6@hotmail.com> CC: kernelnewbies@nl.linux.org, becker@scyld.com Subject: Re: how to load module to kernel core? Date: Mon, 26 May 2003 20:03:55 +0530
Hi Praveen,
If you compiled the program with cc -c only,then try compiling with the following options.
List all the warnings received.
cc -DMODULE -W -D_KERNEL__ -I/usr/src/linux-x.x.x module.c
Regards Ravi
praveen praveen wrote:
hi,
I have written a module whose skeletal form is like this:
// kernel source (/usr/src/linux/ipc/msg.c
void (*fn_ptr)(void);
int msgsnd(parameters) {
...
if(fn_ptr) (fn_ptr)();
}
// my module (module.c)
extern void (*fn_ptr)(void);
void my_func(void) { ...
}
int init_module(void) { fn_ptr=&my_func;
}
When i try to load the module :
$ cc -c module.c
$ ld -r -o module module.o /usr/src/linux/ipc/ipc.o
./module unresolved symbol shmem_lock,shmem_nopage
This is the error message i am getting.please tell me how to load a module to kernel
source which has recursive dependency.
thanks in advance.
- learner
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